Electric controlling device



Dec. 25, 1928. 1,696,744 c. w. WYMAN ELECTRIC CONTROLLING DEVICE Original Filed July 22, 1918 annular flan e 13 on an Patented Dec. 25, 1928.

UNITED STATES PATE NT OFF 1,696,744 ICE.

naon'mnav comramr, A

ELECTRIC CONTROLLING DEVICE.

Original application filed July 22, 1818 Serial No. 246,219. Divided and this application fled 16,

1928. Serial No. 832,332.

This invention relates to electric controlling devices, ing switch.

One object of the present invention is to provide an improved current controlling mechanism. Another object of the present invention is to provide animproved reversing switch which is composed of but few parts which are easily manufactured, easily assembled, and which may be readilydisas sembled. Still another object of the present *invention is to rovide an improved construction wherein w en the arts of the switch are assembled they are loc ed in assembled rela tion and wherein certainty and adequacy of contact between the stationary and movable contact elements is assured. These and other objects and advantages of my improved construction will, however, hereinafter more fully appear. a i

In the accompanying drawings I have shown for purposes of illustration one form which my invention may assumein practice. In these drawings,-

Fig. 1 is a central vertical section of the illustrative formof my improved current controlling mechanism.

Fig. 2 is a perspectiveview of certain parts of the switch in disassembled relation.

Upon a plate of insulating material 1, there is arranged a cruciform insulating plate 2. Mounted u n the plate 1 in spaced relation to each ot er and equi-angularly spaced about a circle are a series of stationary contact elements, generally indicated by 3, each of which is provided with an enlarged head or contact member proper 4 and a bolt-like portion 5. These bolt-like portions extend through holes 6 in the plate 1 and cooperate with nuts 7 in securing the contacts on the plate 1. The nuts 7 v 8 constitute holding means between which the wires of the circuit to be reversed are con nect It will. be noted that the'contacts 4 lie between the arms ofthe cruciform memher 2. Cooperating with the stationary contacts 4 is a movable switch element which comprises verse slot 11 between a pair of lugs 12 formed on the upper side thereof, said disc being rotatably mounted in a bearing formed by an insulating guard plate l4'whic h is secured to the plate 1 as by bolts 15. The disc 10 carries on its face opand more especially to a revers-' sult, the plates 16 are free to .;head 20 from together'with othernuts a. disc 10 provided, with atrans- 'ly described one form which may assume practice, it will posite the lugs 12 apair of segmental contact plates 16 which engage the contact members 4 and serve contact plates 16 are connected to the disc 10 by means of lugs 17. which roject from the rear face of the plates and loosely. engage sockets (see Fig. 1) in the disc 10. I As a repartake of oscillation and will always tilt in such manner as to rest solidly upon the contacts 4, should the latter for any reason happen to lie with their tops in slightly different planes. For the pur-.

to connect them in pairs. The

CHARLES W. 'WYMAN, OF ,CLABEMONT, NEW HAMPBH IBE, ASSIGNOB TO BULIIVAN CORPORATION 01 MSSLCKUSETTS.

pose of rotating the disc 10 a shaft 18, to

whose inner end the hollow hub 19 :of a T- shaped head 20 is secured, is provided and this T-shaped head is adapted to be loosely received in the recess between the lugs 12 on the back of the disc 10. A shoulder 21 on an element (shown broken away) prevents the moving bodily away from the disc 10 and a spring 22 is loosely interposed .between the disc 10 and the end of the shaft 18 and located within the hollow hub 19 for the purpose of resiliently pressing the plate 10 and its contacts 16 toward the stationary contacts 4- The element shown broken away and the plate 1 may be held in spaced relation by bolts providedwith spacing sleeves. It is obviously immaterial whetherit is the plate which supports the said element, or whether the said element open end closed by the rotatable insulating contact carrying member 10. .It will be observed, moreover, thatwhen the plate 1 is detached and moved away from the element readily disassembled by simply removing the bolts 15. The member 2 is easily replaceable and minimizes burning of the plate 1. I

This application is a division of my application Serial No. 246,219, filed July 22, 1918,

on which Letters Patent 1,556,826 have issued under date of October 13, 1925.

While I have in this application specificalmy invention supports the plate 1. In the particular embodiment which I have devised which carries thestationary shoulder21, the entire reverse switch can be be understood that this form is shown for purposes of illustration: only and that the invention may be mmified and embodied in various other forms 4 without departing from its spirit orthe scope of the ap ended claims.

What claim as new and desire to secure a by Letters Patent is:

. uniformly on said tionar y contacts,

1. In a switch, a plurality of fiat staa plurality of separate flat adapted to bear always movable contacts other contacts, a rotatable late by which said movable contacts are lbosely guided, an operating member for actuating said plate and connectedto the latter, and resilient means acting on said plate for forcing said-contacts together.

'2, In a switch, a

ary contacts, a plur ity of separate fiat movloosely iguided,

actuating said all I contacts together.

a a longitudinally slidable interlocm'ng con- ."scribed, a switc comprising,

able contacts adapted to bear formly on said other contacts, plate by which always uni an operating member for late and having a longitudislidable interlocking connection with the atter, and a spring acting between said plate and operating member for forcing said contacts a apted to bear always uniformly on said other contacts, a rotatable plate for loosely guiding said movable contacts, said plate enga ing'each movable contact only adjacent t e center thereof, an operating member for actuatin said plate and having nection with the latter, and a spring acting between said late and operating member for forcing sai contacts together.

5. In an ap aratus of the character dein combination,

' a pluralityof stat onary contact members, a

has

'dislr having contact members coo crating with said first named contact'mem ers, an insulating guard in which said disk is rotatably mounted, a shaft loosely connected with said disk for rotating the same, and a spring interposed between said disk and the end of said shaft for pressing the contacts on the former into engagement with said contact members.

6. In an apparatus of the character de-' scribed, a-switch comprising in combination,

a plurality oi stationary contact members, an

all

lurality of flat station arotatable said movable contacts are Lasers-s insulating plate having portions extending between said members, a disk having contact plates adapted to cooperate simultaneously with a plurality of said contact members, i

an insulating guard in which said disk is :19

rotatably mounted, a shaft loosely cdnnected with said disk for rotating the same, and a .1 spring interposed between said disk and the end of said shaft ,for pressing the former toward said contact members.

' 7. In an apparatus of the character described, a switch comprising, in combination, a plurality of stationary contact members, a disk carrying on its face a plurality of loosely mounted contact plates adapted to B0 cooperate simultaneously with a lurality of said contact members, a shaft oosely connected with said disk for rotating the same,

and a spring interposed between said shaft and disk for pressing the latter toward said 35 contact members.

8. in a switch, an insulating casing having an open ended chamber, a plurality of flat stationary contacts disposed in said chamber, a plurality of separate flat movable u' contacts adapted to always bear uniformly on said other contacts, a rotatable insulating a member closing the open and having recesses for loosely guiding said movable contacts, an operating memberconnected to said closure member for actuating the latter, and resilient meansacting on said closure member for forcing said contacts together.

9. In a switch, an insulatin an open ended chamber, a p urality of fiat stationary contacts disposed in said chamber, a plurality of separate flat movable contacts adapted to bear always uniformly on said other contacts, a rotatable. insulatin her for closing the open end of said chamberand having means for loosely guiding said movable contacts, said latter contacts.

having centrally located dowel pins projecting within said recesses, an operating member for actuating said closure member and. having a longitudinally slidable interlocking connection with the latter, and a sprin acting between said operating member an 010- sure member for forcing said contacts together.

10; in a switch, an insulating casing having an open ended chamber, a plurallty of radially spaced flat stationary contacts disosed in said chamber,

aving portions disposed between said contacts, a plurality of separate fiat movable contacts adapted to always hear uniformly on said other contacts, a rotatable insulating member for closing the open gaging said movable contacts to guide the same, an operating member for actuating said closure member and having a longitudinally slidablc filter-locking connection with the latend of said chamber 3 v casing having meman insulating member 12G end of said chamber and having recesses for loosely enter, and a spring acting between said operating member and said closure member for forcing said contacts together.

11. In a switch, an insulating casing having an open ended chamber, a plurality of fiat stationary contacts disposed in said chamber, a plurality of separate fiat movable contacts adapted to bear always uniformly upon said other contacts, a rotatable insulating member for closing the open end of said chamber and having recesses for loosely engaging said movable contacts to guide the same, an operating member for actuating said closure member and having a longitudinally slidable interlocking connection with the latter, and a spring acting between said operating member and said closure member for forcing said contacts together.

12. In a switch, an insulating casing having an open ended chamber, a plurality of fiat stationary contacts disposed in said chamber, a plurality of separate flat movable con-- tacts adapted to always bear uniformly on said other contacts, a rotatable insulating niember for closing the open end of said chamber and having recesses for loosely engaging said movable contacts to guide the same, said member having a transverse slot formed in the upper surface thereof, an operating member for actuating said closure member having a transverse portion projecting within said slot, said transverse portion and slot forming a longitudinally slidable interlocking connection between said operating member and closure member, and a spring acting betweensa-id operating member and closure member for forcing said contacts together.

within said chamber, se arate movable contacts adapted to bear a ways uniformly on said other contacts, a rotatable insulating member for closing said chamber and with I which said movable contacts are engageable, an operating member for actuating sald closure member and having a longitudinally slidable interlocking connect-ion with said cloj sure member, and a spring acting between said closure member and operat ng member for forcing said contacts together.

14. In a switch, an insulating casin hav- A ing an open ended chamber, a plurality of flat stationary radially spaced contacts disposed in said chamber, an insulating member having portions projecting between said contacts, a plurality of fiat movable contacts adapted to always bear uniformly on said other contacts, said movable contacts havin projecting 'centrall located lugs forme thereon, an insulatm member for closing the open end of said 0 amber and having recesses ,within which said lugs project for loosely engaging said movable contacts to guide the same, said closure member having a transverse slot formed therein, an operating member for actuating said closure member having a transverse portion projecting within said slot, said transverse portion and slot forming a sliding interlocking connection between said closure member and operating member, and a spring acting between said operating member and closure member for forcing said contacts together.

In testimony whereof I afiix my signature.

CHARLES w. WYMAN. 

